Nagilum23 writes: "It looks like Lenovo only knows of Windows8 and RHEL when it comes to Secure Boot. While investigating UEFI boot issues Matthew Garrett found that the Thinkcentre M92p BIOS actually checks the descriptive string:"there is a function that compares the descriptive string against "Windows Boot Manager" and appears to return an error if it doesn't match. What's stranger is that it also checks for "Red Hat Enterprise Linux" and lets that one work as well."Phoronix is also running the story: http://www.phoronix.com/scan.php?page=news_item&px=MTIyOTg ."